ATMEGA406-1AAU Atmel, ATMEGA406-1AAU Datasheet - Page 50

• Manufacturer Part Number: ATMEGA406-1AAU
• Description: IC AVR MCU 40K 1MHZ 48LQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA406-1AAU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 1MHz
• Connectivity: I²C
• Peripherals: POR, WDT
• Number Of I /o: 18
• Program Memory Size: 40KB (20K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 2K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 25 V
• Data Converters: A/D 10x12b
• Oscillator Type: Internal
• Operating Temperature: -30°C ~ 85°C
• Package / Case: 48-LQFP
• Processor Series: ATMEGA48x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 2 KB
• Interface Type: 2-Wire
• Maximum Clock Frequency: 1 MHz
• Number Of Programmable I/os: 18
• Number Of Timers: 2
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 30 C
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 1MHz
• Total Internal Ram Size: 2KB
• # I/os (max): 18
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 5/9/12/15/18/24V
• Operating Supply Voltage (max): 25V
• Operating Supply Voltage (min): 4V
• On-chip Adc: 10-chx12-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -30C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 48
• Package Type: LQFP
• Controller Family/series: AVR MEGA
• No. Of I/o's: 18
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 2KB
• Cpu Speed: 1MHz
• Rohs Compliant: Yes
• For Use With: 770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 10-1.
50
WUTP2
0
0
0
0
1
1
1
1
ATmega406
Wake-up Timer Prescale Select
WUTP1
0
0
1
1
0
0
1
1
• Bit 6 – WUTIE: Wake-up Timer Interrupt Enable
When the WUTIE bit and the I-bit in the Status Register are set (one), the Wake-up Timer inter-
rupt is enabled. The corresponding interrupt is executed if a Wake-up Timer overflow occurs,
i.e., when the WUTIF bit is set.
• Bit 5 – WUTCF: Wake-up Timer Calibration Flag
The WUTCF bit is set every 1.95 ms (256 Slow RC OScillator clocks or 64 32 kHz Crystal Oscil-
lator clocks). WUTCF is cleared by writing a logic one to the flag. WUTCF can be used to
calibrate the Fast RC Oscillator to the 32 kHz oscillator or the Slow RC Oscillator.
• Bit 4 – WUTR: Wake-up Timer Reset
When WUTR bit is written to one, the Wake-up Timer is reset, and starts counting from zero.
The WUTR bit is always read as zero.
• Bit 3 – WUTE: Wake-up Timer Enable
When the WUTE bit is set (one) the Wake-up Timer is enabled, and if the WUTE is cleared
(zero) the Wake-up Timer function is disabled. It is recommended to reset the Wake-up Timer
when enabling it, by simultaneously setting the WUTR and WUTE bits.
• Bits 2:0 – WUTP2, WUTP1, WUTP0: Wake-up Timer Prescaler 2, 1, and 0
The WUTP2, WUTP1 and WUTP0 bits determine the Wake-up Timer prescaling when the
Wake-up Timer is enabled. The different prescaling values and their corresponding time-out
periods are shown in
these bits.
WUTP0
0
1
0
1
0
1
0
1
Number of Slow RC
Oscillator Cycles
128K(131072)
256K(262144)
512K(524288)
16K(16384)
32K(32768)
64K(65536)
4K(4096)
8K(8192)
Table
10-1. The Wake-up Timer should always be reset when changing
Number of 32kHz Crystal
Oscillator Cycles
128K(131072)
16K(16384)
32K(32768)
64K(65536)
1K(1024)
2K(2048)
4K(4096)
8K(8192)
Typical Time-out
31.25 ms
62.5 ms
125 ms
250 ms
0.5 s
1 s
2 s
4 s
2548E–AVR–07/06